Question

Q11 Simplify : (x+y)(2x+y)+(x+2y) (x-y)and verify the expression for x=1 and y= 2​

Answer 1

Answer:7

Step-by-step explanation:

(x+y) (2x+y) + (x+2y)(x-y)

Putting the value

(1+2) (2+2) + (1+4) (1-2)

= 3×4 +5×-1=12-5=7

Answer 2

Answer:

${3x}^{2} + 4xy - {y}^{2}$